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외부텐던
Basic parameters of design
K = wooble coefficient
m = friction coefficient
K = 0
Typical values of m
| Strand | Duct | Coeff. m |
| Lubricated | HDPE | 0.12/rad |
| Non Lubricated | HDPE | 0.14/rad |
| Lubricated | Steel | 0.18/rad |
| Non Lubricated | Steel | 0.25/rad |
Basic configuration for deviators
| Strand type | Radius min. near anchorage Rc [m] | Radius min. at deviator Rc [m] |
| 12M5 | 3.5 | 2.5 |
| 19M15 | 4.0 | 3.0 |
| 37M15 | 5.0 | 5.0 |
Basic configuration for ducts
Tendons grouted with cement
• Duct Area ≥ 2 Strand Cross Section
• P nominal ≥ 1 MPa (10bar)
출처:Post-tensioning system
LMK Post tensioning system
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